Sparkle: hover feedback with touchable electric arcs

Spelmezan, Daniel, Sahoo, Deepak and Subramanian, Sriram (2017) Sparkle: hover feedback with touchable electric arcs. Published in: Proceedings of the 2017 CHI Conference on Human Factors in Computing Systems (CHI 2017); Denver, CO, USA; 6-11 May 2016. 3705-3717. Association for Computing Machinery ISBN 9781450346559

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Abstract

Many finger sensing input devices now support proximity input, enabling users to perform in-air gestures. While near-surface interactions increase the input vocabulary, they lack tactile feedback, making it hard for users to perform gestures or to know when the interaction takes place. Sparkle stimulates the fingertip with touchable electric arcs above a hover sensing device to give users in-air tactile or thermal feedback, sharper and more feelable than acoustic mid-air haptic devices. We present the design of a high voltage resonant transformer with a low-loss soft ferrite core and self-tuning driver circuit, with which we create electric arcs 6 mm in length, and combine this technology with infrared proximity sensing in two proof-of-concept devices with form factor and functionality similar to a button and a touchpad. We provide design guidelines for Sparkle devices and examples of stimuli in application scenarios, and report the results of a user study on the perceived sensations. Sparkle is the first step towards providing a new type of hover feedback, and it does not require users to wear tactile stimulators.

Item Type: Conference Proceedings
Keywords: haptics, human-computer interaction, user interfaces
Schools and Departments: School of Engineering and Informatics > Informatics
Research Centres and Groups: Creative Technology
Subjects: Q Science
T Technology > T Technology (General)
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Depositing User: Sriram Subramanian
Date Deposited: 08 May 2017 11:26
Last Modified: 18 Jul 2017 09:30
URI: http://sro.sussex.ac.uk/id/eprint/67131

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Project NameSussex Project NumberFunderFunder Ref
Dhapticsg1757ERC Proof of ConceptGA640749